sin210
![sin60度等于多少](https://i.ecywang.com/upload/1/img0.baidu.com/it/u=153210542,531686194&fm=253&fmt=auto&app=138&f=JPEG?w=470&h=257)
sin60度等于多少
图片尺寸496x271![sin210学习笔记zigbeecc2530](https://i.ecywang.com/upload/1/img0.baidu.com/it/u=1237672173,1205316644&fm=253&fmt=auto&app=138&f=JPEG?w=696&h=500)
sin210学习笔记zigbeecc2530
图片尺寸2507x1802![= sin210°](https://i.ecywang.com/upload/1/img0.baidu.com/it/u=1598275960,2940235425&fm=253&fmt=auto&app=138&f=JPEG?w=667&h=500)
= sin210°
图片尺寸1080x810![分享到: 2015-04-30 20:27 提问者采纳 cos(-210°)等于多少?](https://i.ecywang.com/upload/1/img1.baidu.com/it/u=1771834770,203221661&fm=253&fmt=auto&app=138&f=PNG?w=450&h=164)
分享到: 2015-04-30 20:27 提问者采纳 cos(-210°)等于多少?
图片尺寸450x164![(1)sin 405 ; (3)cos (-300 ; ) (4)sin 210](https://i.ecywang.com/upload/1/img0.baidu.com/it/u=4292100665,3100429857&fm=253&fmt=auto&app=138&f=JPEG?w=667&h=500)
(1)sin 405 ; (3)cos (-300 ; ) (4)sin 210
图片尺寸1080x810![com/publications/0b08eb191f0a18a4052563210a7687](https://i.ecywang.com/upload/1/img2.baidu.com/it/u=3336519826,4126260583&fm=253&fmt=auto&app=120&f=JPEG?w=607&h=458)
com/publications/0b08eb191f0a18a4052563210a7687
图片尺寸640x483![2014届高考数学总复习小题冲关课件(浙江专用):专题1](https://i.ecywang.com/upload/1/img1.baidu.com/it/u=1258369361,4144763905&fm=253&fmt=auto&app=138&f=JPEG?w=500&h=375)
2014届高考数学总复习小题冲关课件(浙江专用):专题1
图片尺寸1080x810![联测工业电导率仪检测仪sin-tds210 ec8.0养殖溶解氧浊度污泥浓度](https://i.ecywang.com/upload/0/t13.baidu.com/it/u=1300880651,3858968643&fm=224&app=112&f=JPEG?w=500&h=500)
联测工业电导率仪检测仪sin-tds210 ec8.0养殖溶解氧浊度污泥浓度
图片尺寸800x800![已解决sin210触摸屏不准](https://i.ecywang.com/upload/1/img0.baidu.com/it/u=3462435842,950048149&fm=253&fmt=auto&app=138&f=JPEG?w=675&h=500)
已解决sin210触摸屏不准
图片尺寸842x624![联测工业在线电导率仪sin-tds210-b测试仪水质测量ec值检测仪导电](https://i.ecywang.com/upload/0/t13.baidu.com/it/u=3733559092,1240271507&fm=224&app=112&f=JPEG?w=500&h=500)
联测工业在线电导率仪sin-tds210-b测试仪水质测量ec值检测仪导电
图片尺寸800x800![四川省简阳市阳安中学2015-2016学年高一上学期第三](https://i.ecywang.com/upload/1/img2.baidu.com/it/u=2008857483,3089034636&fm=253&fmt=auto&app=138&f=PNG?w=589&h=447)
四川省简阳市阳安中学2015-2016学年高一上学期第三
图片尺寸589x447![sin210°=.所以sin210°=sin=-sin30°,因为sin45°=.sin225°=.](https://i.ecywang.com/upload/1/img1.baidu.com/it/u=1700120580,2718456841&fm=253&fmt=auto&app=138&f=GIF?w=630&h=303)
sin210°=.所以sin210°=sin=-sin30°,因为sin45°=.sin225°=.
图片尺寸630x303![418_210gif 动态图 动图](https://i.ecywang.com/upload/1/img2.baidu.com/it/u=2670394075,1900761469&fm=253&fmt=auto&app=138&f=GIF?w=418&h=210)
418_210gif 动态图 动图
图片尺寸418x210![sin30是0.5,sin210是-0.5.为什么又写成-0.5≤sin](https://i.ecywang.com/upload/1/img0.baidu.com/it/u=3405018340,4151688903&fm=253&fmt=auto&app=138&f=JPEG?w=500&h=667)
sin30是0.5,sin210是-0.5.为什么又写成-0.5≤sin
图片尺寸768x1024![我画图 y =sin x](https://i.ecywang.com/upload/1/img1.baidu.com/it/u=2110476339,502024763&fm=253&fmt=auto&app=138&f=JPG?w=706&h=426)
我画图 y =sin x
图片尺寸706x426![sin30度等于多少sin30度的平方是多少](https://i.ecywang.com/upload/1/img2.baidu.com/it/u=1029521502,2316850425&fm=253&fmt=auto&app=138&f=JPEG?w=564&h=500)
sin30度等于多少sin30度的平方是多少
图片尺寸1198x1062